Carbureter



C. C. LITTLE.

CARBURETER.

I APPLICATION man mm. 19|. 191s. 1,399,353, Patented Dec. 6, 1921.

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C. C. LITTLE.

CARBURETER.

APPLICATION FILED MAR. I9. 1919.

Patented Dec. 6, 1921.

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v v v v Fleurus 9 HIS ATTORNEY UNITED STATES CHARLES C. LITTLE; 0F SAN J' OSE, CALIFORNIA.

CARBURETER.

Application filed March 19, 1919.

T 0 all whom t may concern.'

Be it known that I, CHARLES C. LrrrLn, a citizen of the United States, and resident of San Jose, in the count-y of Santa Clara and State of California, have invented certain new and useful Improvements in Carbureters, of which the following is a speciication.

My invention relates particularly to a type of carbureter adapted for use with heavy fuels.

The objects of my invention are to provide a carbureter of the which means is provided for heating the combustible mixture formed therein and in which a means is provided for so regulating the heating means that it will be suficient to secure complete vaporization of the mixture at all positions of the throttle and yet not so great at any position of the throttle as to cause decomposition of the fuel. v

I also contemplate providing in conjunction with the heating means and its controlling means, a lmeans by which the engine may be started and run at slow speed, and a means for the addition of exhaust gas to the mixture.

A still further object of my invention is to provide a carbureter embodying some or all of the means above set forth that will he economical in construction and operation and eiiicient in its practical application.

With these and other objects in view, reference is made to the accompanying drawings, in which- F igure 1 is a longitudinal section through the center of my improved carbureter.

Fig. 2 is a sectional view on line 2-2 of Fig. 1.

Fig. 3 is a sectional view on line 3-3 of F ig. l.

F ig. t is a sectional view on line 4-4 of F ig. l.

F i0. 5 is a perspective illustration ot the heat regulating means.

Fig. 6 is a side elevation of the carbureter showing a means of operating the heat regulating means in conjunction with the throttle.

Fig. 7 is an elevation of a portion of the carbureter at 7 7 of F ig. 6.

Fig. 8 is a modification showing an elevation of a portion of the carbureter shoW- ing an adjustable means for operating the Specification of Letters Patent.

nature indicated in mounted in body l and top of bypass 12 troduced into the mixture Patented Dec. 6, 1921..

Serial No. 283,457.

heat regulating means when the said heat regulating means is mounted as two separate members. Y

ig. 9 is a longitudinal section a portion of the carbureter showing means on the mixture conduits for the absorption of heat.

Fig. 10 is a detail sectional view through a portion of the carbureter showing a modification in which the guide member is used without a detlector.

Fig. l1 is a detail sectional view through a portion of the carbureter showing a modiication in which the defiector is used without the guide membe Similar characters of reference indicate similar parts throughout the several views.

Referring now more particularly to the drawings, l indicates the body of the carbureter having a plurality Vof conduits 2`2a-2b passing lengthwise therethrough through the vaporizing chamber 3 thereof, the said vaporizing chamber 3 receiving exhaust gases through' inlet 4 and discharging the same through outlet 5.

The conduits 2-2a.2b are preferably formed with comparatively thin side walls and somewhat extended edge walls as indicated at 6-6a-6b, thereby yforming long, narrow and deep passages as 7-7a*7b-7c through which the exhaust gases from inlet 4 must travel. At 8 is shown a `shaft and carrying a member comprising deflector 9 and guide 10. V.Guide 10 extends substantially the full length of chamber 3 and Ynormally is positioned as in Fig. 3 at which time delector 9 isnormally positioned as shown. Deflector 9 is provided withV sides ll which engage the'sides and is open at the top so that a deiecting edge of suitable curvature may be formed at 13, and a means gases a A passage is shown at 14 connecting the chamber 3 with conduit 2tl and controlled by a needle valve l5, whereby a small amount of the heating medium may be inof fuel and air to act as a diluent thereof and thereby prevent too violent explosions.

The explosive mixture is delivered to the several conduits 2`2a-2b by a' suitable multi-jet carbureting device vin which Vthe several jets l 6-16-l6b discharge into car-V through bureting chambers 17--17 a--17b connected with their respective conduits 2-2--2", and connected to a sourre of supply present instance I have also included a jet 19 discharging into chamber 20 which 'com-` municates with a conduit 21`positionedr as shown, the jet 19 bein supplied from Yfloat chamber 22 With a lig iter fuel for starting and operating slowly. n

At 23 is shown a rotary throttle inserted between the discharge outlet 24C` and the terminals of the several conduits and having l grooves as 25-25a-25b--27 formed in its and communicating with the terthe said conduits by passages 26# periphery minals of pending Vapplication for carbureter, Serial No. 207614, iled'DecQ17, 1917, for a complete disclosure of the type of throttle herein referred to. In the present case `the throttle is provided with a Groove 27 forcontrolling the flow of fuel tfrom conduit 21, the same being so formed as to close off said conduit as at 28 when the first conduit 2*- is opened to supply a heavier fuel-' I have also here shown auxiliary airports 29--29a--29"-29c to each passage 264-26-A V26"---262 the passage of air therethrough becated by closes olf the suction on jet 19 as indicated follows. Upon the opening of siderably elongated Fig. 3, the thin sides of sorption and more mass `mechanism being fully disclosed inmy cofor carbureterA filed the engine speed'increases and the throttle 23 is rotated further in the direction indithe arrow the edge of groove 27 at 28, and `groove 2 5b opens as indicated at 32 thereby bringmg ]et `16 into action With its heavier fuel.

The action of jets 16-1616b is the same Whether or not a supplementary jet 19 is used for starting with lighter fuel, and isa-s groove 27b jet 16h is brought into action, the mixture being formed in a chamber 17 b which is small compared to the capacity of the 'auX- iliary valve 30". rIhe mixture is drawn through conduit 2, the same having a concross-section-as shown in the conduits thereby presenting ay greater surface for the absorption of heat than would be the case if "a more compact section were used, and the extended end Walls 6"` providing more surface for abfor the` retention of heat. The `heating of these parts is effected `by concentrating the-exhaust gases passing 18. In the 1 1 tion of the still more heated lsorbing fins in' the-present operating in conjunction with valve control- In starting', throttle 23 lconjunction With and the diluted mixture passes through groove 27 to the engine. As

y sirable inasmuch 'as :orf member 9 can through chamber 3 upon the Wallsof conduit 21D by the positioning of guide 10 as shown, the heated yvallsassisting' materially in the vaporization of the heavy fuel passing therethrough. A further means of extracting and utilizing heat available at lovv speeds consists in the provision of fins orribs, as 33, upon the side Walls of the conduit 2b.

. A ,further opening of the throttle brings grooves 27Y and jet 16a into action and also swings guide 10 into theposition indicated at 10a, and deflector 9 into the position 9a through the medium of suitable connections such as indicated by the numerals 35 to 40. A portion of the more highly heated gases dueto the greater engine speed is now discharged through by-pass 12 is directed around the first two conduits 2a and 2b, conduit 2a also being provided with a pluralityof fins 33 of smaller dimensions, or

fewer in number, than those placed on conduit 2b. (With the throttleA 23 Wide open the guide 10 assumes a position as at 10 and the deflect-0r opens to 9bso that alarger proporgases 1s charged at 12 andthe `balance is allowed to `pass around all `of the conduits 2-2"-*2),

conduit 2 not being provided 'with heat abcase. It is apparent, ofcourse, that the capacity of the deflector or valve 9 is-determinedin part by the form given to its upper unat- 'tached edge 13 in conjunction `with the edge of the body of the carbureterlwith which it operates. l Asa means for-operating this member'in the throttle 23 I 4have shown-a sector 34a on link 84 pivoted at 35 and connected to arm 36 of said throttle lever by link 37. The' sector 84e operates a pinion 88 and Worm gear 39 which in turn operates a pinion 4:0 on the shaft 8 of deflector 9 and guide 10. This construction is dethere is considerable pressureof a pulsating nature in the carbureter, the members being interconnected and irreversible. Y. f v

In. the embodiment shown in Fig. 8 the guide 10 is mounted on a separate shaft 41 having an arm 42, and shaft 8 of deflector 9 has an arm 113, thetwo arms being connected by a'link 44. It is evident that any-suitable connection to the throttle Will operate the tivo members 9 and 10 simultaneously in any predetermined relation to-each other,

said relation being effected by suitable admeans of pins 45 in adjusting holes 4:6. By this adjustment the relative degrees of motion between members 9 and 10 can be varied be given a certain 4amount of lead or lag over member 10.

There may be certain conditions under which either oneof themembers 9 or 10 may be useful alone iii-'Which case they may' the i be mounted substantially as described in the foregoing description and as illustrated in Figs. 10 and l1 respectively.

It is understood of course that changes in form, construction, operation and general arrangement of the several features may be made within the scope of the appended claims.

I claim:

l. A combined vaporizer and carbureter including a heating medium conducting chamber having an inlet and outlet, fuel conduits extending through the chamber between the inlet and outlet, a by-pass arranged in the wall of the chamber between the inlet and said conduits and adapted to place the interior of the chamber in communication with the atmosphere, a valve mounted in the by-pass for controlling the passage of heating medium from the chamber to the atmosphere, an adjustable deiiector mounted in the chamber for directing heating medium onto one or more of said conduits, and means connecting the valve and deflector, the valve, delector and means connecting the same being so arranged that opening of the valve will cause the deflector to direct heating medium on an increasing number of conduits.

2. A combined carbureter and vaporizer of the kind defined by claim l in which the valve and detlector are pivotally mounted and in which the deiiector extends substantially the entire length of the interior of the chamber.

3. A combined vaporizer and carbureter including a heating medium conductingchamber having an inlet and an outlet, fuel conduits extending through the chamber between the inlet and outlet, and an adjustable delector mounted in the chamber between the conduits and inlet for concentrating heating medium on one or more of said conduits.

4. In a combined vaporizer and carbureter, a heating medium conducting chamber, conduits extending through the chamber, a bypass positioned in the wall of said chamber, a valve pivotally mounted in said by-pass and having a front member extending into said chamber, said front member having a detlecting edge of such contour as to progressively open said by-pass to deflect heating medium therethrough when opened, and having side members attached to said front member and engaging said ley-pass, means for operating said valve, and a deflector mounted in the chamber between the conduits and inlet for concentrating heating medium onto one or more of said conduits.

5. A combined vaporizer and carbureter including a heating medium conducting chamber having an inlet and an outlet, a plurality of substantially parallel spaced conduits passing through the chamber between the inlet and outlet, a by-pass arranged in the wall of the chamber, a valve contr'olling said by-pass, an adjustable detlector operatively connected with said valve and mounted in said chamber between the conduits and inlet and adapted to concentrate a heating medium upon one or more of said conduits, and means for adjusting the detlector and valve.

6. A combined vaporizer and carbureter including a heating medium conducting chamber, a plurality of vaporizing conduits arranged in said chamber, a throttle for controlling the passage of fuel through said conduits, a by-pass positioned in the wall of said chamber, a valve operatively mounted in said by-pass, connections for rendering said throttle and said valve coactive, and means coacting with said valve for concentrating the flow of heating medium around one of said conduits when said valve is closed and around additional conduits as said valve opens.

7. In a combined vaporizer and carbureter, a heating medium conducting chamber, a plurality of vaporizing conduits passing through said chamber, a by-pass positioned in the wall of said chamber near said conduits, a. deilector pivotally mounted in said chamber adjacent said conduits and adapted to concentrate the liow of heating medium around one or more of said conduits, and a valve pivotally mounted in said by-pass to coact with said deflector and having side flanges adapted to engage said by-pass, and a front member connecting said side flanges, said front member having a dellecting edge of such contour as to progressively open said by-pass as said detlector is shifted with relation to said conduits to permit the passage of heating medium around additional conduits.

8. In a combined carbureter and vaporizer, a heating medium conducting chamber having an inlet and an outlet, one wall of said chamber being provided with an opening to permit the discharge of heating medium from the interior of the chamber to the atmosphere, a plurality of spaced fuel conducting conduits arranged in said chamber between the inlet and the outlet, a valve controlling said opening, a deflector operatively connected with said valve and arranged to direct the heating medium onto one of said conduits when the valve is closed, said dellector being adapted to direct the heating medium onto an increased numberof conduits when the valve is opened, a throttle controlling the passage of fuelr through the conduits, and means operatively connecting the throttle with the valve and deflector to cause movements of the throttle to be imparted to the dellector and valve.

Executed this 4th day of March, 1919.

CHARLES C. LITTLE. 

